I frequently get questions about how and where to get more coupons. If you are missing coupons from past inserts or you just want more of a certain coupon, my recommendation is to use a coupon clipping service. I personally use My Coupon Hunter to get extra coupons and have found it to be cheap and super speedy!
For example, last week I purchased the $3.00/1 Gain Fabric Softener coupon..because I knew this would make them free at a lot of stores and this week I purchased extra $3/1 Purex Laundry coupons, because I like this stuff and I know I can get it for $0.99 at Rite Aid this week. Each coupon cost me $0.40 + a nominal shipping fee. Buying coupons this way, versus buying the weekly paper, allows me to stock up on ONLY the coupons I need or want.